There are a handful of reputable sex toy sellers online. My personal recommendation is LoveHoney. They have the best prices, and the best customer support and returns policy. They also offer free express two day shipping to anywhere in the USA if you spend more than $100.
If you’re looking for interactive masurbators that synch to pre-recorded porn (including VR porn) or even live webcam girls or for remote sex with a lover, then Kiiroo is your place to go. Their groundbreaking male sex toys can be used simply as male masturbators too.
EdenFantasys is another long established and trustworthy online sex toy retailer. They also have a large range of their own brand made products that you wont see anywhere else. A lot of their stuff will be on sale at any given time too, as they offer regular discounts.
Kanojo Toys is the largest Japanese sex toy store online. Real Japanese sex toys, dolls, blowjob machines, masturbators – even ‘sex pillows’ and used panties (!) – shipped internationally from Japan. Products are cheap, so save money on shipping by buying several or more each time you shop.