Cheap or expensive
One side says anything under twenty pounds is dangerous. The other says it is all the same factory. Both are wrong, and the reason is that "safety" is three separate questions that respond to price in three different ways.
Three questions, not one
Is the material safe to put on your body? This depends on what the material is and how it was made, not on what it cost. A cheap TPE toy from a retailer that names its materials is not more toxic than an expensive one. It is shorter-lived, softer, and harder to clean — those are real drawbacks, but they are not poisoning.
The genuine risk in this group is mislabelling: something sold as silicone that is not, or a soft material with an unlisted plasticiser content. That happens at every price point. Paying more reduces the odds because reputable brands have more to lose, but it does not eliminate them.
Is the electrical part safe? This one does track price, and more sharply than anything else here. A rechargeable product contains a lithium cell and a charging circuit. Cheap versions of both exist, and a cheap lithium cell with no protection circuit is a genuine fire risk, not a theoretical one. This is where the "do not buy the cheapest one" advice comes from, and it is the part of that advice that holds up.
Is the labelling honest? Partly price-dependent. Expensive products are not immune — "medical grade silicone" appears on products that cannot justify it at any price — but a brand with a customer service address has more reason to be accurate than a listing with no name on it.
What you actually pay for
Moving up the price range buys, roughly in this order: material that lasts (silicone instead of TPE), a motor that does not rattle, a battery that holds its rating, quieter operation, and a warranty that means something.
Those are all real. None of them are about safety in the toxic sense. They are about whether the thing still works well in a year.
The step that matters most for money is the one from TPE to platinum-cure silicone, because it changes the lifespan from months to years and makes proper cleaning possible. After that, the improvements get smaller and more about refinement.
When cheap is fine
Buy cheap when the thing has no battery and no motor. A silicone-free plug, a glass toy, a plastic storage case, a bottle of lubricant — these have no electrical risk and the material question is answered by the label rather than the price.
Buy cheap when you are finding out whether you like a category at all. Spending £15 to discover that a shape does nothing for you is a better outcome than spending £90 on the same discovery.
Buy cheap from a retailer that will take it back. The return policy is worth more than a small difference in build quality.
When cheap is a bad trade
Anything rechargeable at the very bottom of the range. The battery and charging circuit are where the cost was cut, and that is the one place where cutting cost has a consequence beyond disappointment.
Anything with a claim you cannot verify at a price that makes the claim implausible. "100% platinum silicone" at a price below what the material costs to make is not a bargain.
Anything that will be used internally on a regular basis, where a short lifespan means replacing it three or four times a year — at which point the cheap one was not cheap.
When expensive is a bad trade
When the price is buying design rather than function. Some of the most expensive products in this category are expensive because of how they look, and the mechanism inside is the same one in a product at a fifth of the price.
When it is the first one you have bought. You cannot know which of the expensive refinements you care about until you have used something.
When the listing leans on words rather than specifications. An expensive product that will not tell you the material, the battery capacity or the warranty terms is not more trustworthy than a cheap one that does. Price is a signal, not a guarantee.
The rule that survives
Buy the cheapest thing that has the feature you need and a retailer that will accept a return, then spend more only on the parts that fail — which in practice means the battery, the motor, and the material.
That is a less satisfying rule than "buy the good one", and it is the one that holds up.
Questions that come up
Is there a legal safety standard for these products?
In the UK they fall under general product safety rules rather than a category-specific standard, and CE marking on this type of product is often a manufacturer's own declaration. That is why the retailer and the brand matter more than the mark.
Do cheap toys contain phthalates?
Some soft materials do, and the ones that do are usually the ones that do not name their material. The practical defence is buying from listings that state what the material is, at any price.
Is a £100 one ten times better than a £10 one?
No. The useful jump is from the cheapest tier to mid-range, which buys silicone and a protected battery. Above that, the returns are small and mostly aesthetic.
More guides
Silicone or TPE
Almost every soft product in this category is sold as silicone, and a large share of them are not. The difference is not snobbery about materials. It decides how long the thing lasts and whether it can be cleaned properly.
Air pulse or vibration
These get sold as if one is the upgraded version of the other. They are different kinds of stimulation, and the difference decides who should not buy the more expensive one.
Is it actually waterproof?
IPX7 is a real standard and most listings quote it correctly. What it does not tell you is that the test is done in clean, still, cold water on a brand-new unit, which is not the situation you are buying it for.