Pro Quo Books - internationalbooks On Amazon.com, pro quo books are a complete fake and should be stopped, Internet

I am a small independent bookseller. The practices International Books uses makes it difficult for legitimate booksellers to assist our customers.  I have read customer complaints on the site about how the books ordered are never recieved and/or recieved in poor condition. The responses are that the books are lost by the USPS or anyone else in the chain.  The real problem with this company isn't even with the customer service, it is in the listings themselves. No matter what is listed... somehow international books has a copy... within a day or two they will suddenly have a listing $.01 below whatever is listed... hundreds of thousands of books... this is obviously not possible.

Go to amazon.com and search international books or (pro quo books on ABE.com)-click to see all of their open listings.. then have them order them by most expensive.. you will find things that are not realistically worth $2.00 listed with them for $9999.57.  Page after page of these listings... shockingly stupid listings are clogging the way. ... the average buyer has no idea that they are looking at the listings of a 'drop-shipper'. that they don't have any of these books... they take your order and fill it will someone else in whatever half-assed manner they see fit and then they keep your money and they tell you to take it to amazon. 

stay away from them.. choose sellers that actually describe the item, in detail and only go with sellers that have very high (98% and above) customer reviews... ask specific questions... reputable sellers won't mind answering any question you have.

how can what international books does be legal?