Koala is convenient and very competitively priced. My only real concern is due to how receipts are generated and how that affects insurance claims processing. The printed shipping notice has all the relevant information nicely laid out and is perfect for insurance claims, but often has a date several days after the credit card is charged. The online receipt is just a normal webpage, not a PDF or billing receipt like other vendors offer, This can lead to issues if the billing and shipment dates occur across two different policy terms. Koala also can not accept digital or scanned prescriptions from a customer, only a vet practice, due to MA state laws. Many regular vets refuse to engage with online pharmacies as they sell medications too, although specialty vets seem to not have a problem, and will only provide digital prescriptions directly to the customer. Upon learning that Koala will not accept them, a customer will then have to fight with their vet to get a paper prescription - which must then be mailed to Koala's HQ. If I were in Koala's management, I would move the pharmacy/shipping operations to a state with the most lax laws possible so that prescriptions can be most easily processed.