I've bought 120 16GB drives in the last year and am about to order 50 more (don't ask why) and I've had good luck with them. Yes they are slow but the description clearly says they are 2.0 so just assume they are slow and don't plan on moving large files quickly. Yeah, I wouldn't use that as the only copy of my irreplaceable pictures either, because in a year or two it might break and become unreadable. They are very reasonably priced and the first page of all 1 star reviews is misleading (half of them are impossible or look like user error which is sad for such a basic product). As a result, they work perfectly and are very inexpensive. This is my main flash drive that I carry in my bag and use almost every day, no. Whether you want cheap drives that you can lend to others (without knowing if you'll get them back) or sell them cheaply to those who need them but don't have them on hand, they'll meet all your needs.
Sandisk Ultra Flair 128 GB Silver USB Flash Drive: Reliable and High-Speed Storage
65 Review
Compact and Convenient: SanDisk Cruzer Fit USB 32GB Flash Drive (SDCZ33-032G-A11)
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Samsung BAR Plus 128GB - High-Speed USB 3.1 Flash Drive Titan Gray (MUF-128BE4/AM)
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Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
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8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review
π Seagate Expansion 3TB Portable USB 3.0 External Hard Drive (STEA3000400) in Black
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18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
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2 TB External HDD ADATA DashDrive Durable HD650, USB 3.2 Gen 1, Blue
55 Review