You don't seem to offer viable GPU options - or maybe the pricing page is not up to date?

The GPU add-on cost is about 7.50$ per hour for a 12 GB K80 (which has 24GB, so you share it? Also, it's from 8? years ago?). As an add-on, other vendors would give you V100s (possibly multiple ones).

I am pretty sure that's not actually what you are offering, because that would be ridiculous. So you probably want to update your pricing page ;-)

The K80 presents to the OS as two cards. It is common of hosters to seel those parts separately (AWS does so too).

The S3 integration looks interesting. Do you have GPUs though? I think that's the main appeal of colab and I didn't see it immediately on your site