@pixelbook - I have a hundred credits on RevoStock. When I buy an AE project for $29 using my credits that I pre-deposited (just like here), RevoStock sends me an email invoice showing the AE project I purchased and the price in the form of a receipt. Same with iStock, same with Shutterstock, same with Dreamstime. I can use those emailed receipts to get reimbursed from my employer. So, it's not the same thing.
@charlie4282 - Correct, if you buy something direct and not using your deposited credit, then you can get an invoice. But that means I have to pay a higher price just to get a receipt and I have to use my PP or CC and not the credits I have already paid for... which is ridiculous.
Let's be honest, most of us here are probably programmers and could code up a simple link to display a text receipt in a few minutes. Someone at Envato just needs to get off their ass and do it. Otherwise, I have to go elsewhere to purchase stuff. Or get my accounting department to set up an account and then wait weeks for them to actually get the stuff I need, which aint gonna happen.