DigitalSoftOcean

My etextbook was available for only $11.99 from this website, only it's not an actual etextbook that expires after a certain time, it's a pdf download. I'm actually okay with this because I can use the download link to download the file onto my Kindle Fire HD and onto my phone. The download is not a book in my carousel of my Kindle, it's available to read via my Adobe reader in 'my downloads'.
I was hesitant to order because there were no reviews, and it appeared there was no customer service contact number. The only way to get in contact with someone is via a message to support. They say you'll be contacted within 12 hours. This is true, I received an email response back within an hour. The next day, when I responded to their original email response back to me, it took less than 30 minutes for my question to be answered. It would be nice to have a phone number, however, this place seems very low key and not loud like some other larger online booksellers.
So far so good, I could order all my pdf ebooks from here again in the future. I gave a four star because there is no contact number, but if I could give a 4 1/2 star for this, I would.