In my experience, most US companies don't provide EU style invoices for everyone, but every single time I've asked for one, I got it, except for namecheap - and trust me, I asked multiple times. Receipts are useless in most EU countries, since you need a valid invoice to claim the expense. That includes listing both the buyer and seller legal names, addresses, what was sold, etc... as well as VAT numbers (or local equivalent).