Newegg If you want some computer related stuff/electronics, Overstock for furniture, jewelry etc. NameCheap for hosting or domain names, ProtonVPN, NordVPN,IPVapnish for VPN providers, Bitrefill to top up your phone and If you want other stuff that are not covered by these services for example, you could always try Purse.io to buy indirectly from Amazon (with a discount) or buy gift cards from Gyft and spend them.
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thank you very much