To ensure that the horses have lots of hay to eat, Charley contacts Otis Hays, President of Fine Equine Dine Inc. (FED) about purchasing hay for a year for twenty horses. Otis emails Charley, saying "We estimate that you would need about 4.5 tons per horse, so we can supply you with hay at $250/ton if you order 90 tons." Charley replies back, saying "We would be willing to proceed if the price is $175/ton." Otis emails back, saying, "$225/ton is the lowest we can go."

At this point, Charley decides to shop around. He finds the website for Stray Hay At Bargain Basement Yields Ltd. (SHABBY). On the website, SHABBY is offering hay at a great price - $125/ton - so Charley orders 90 tons of hay from them. No details are included on the website about the type or quality of hay.

...

Charley isn't quite sure what to do at this point, so he goes online to find another hay supplier. It turns out that due to increased demand in the market, hay is now generally selling for over $300/ton, so Charley emails Otis Hays at FED the following: "we will take 90 tons of hay at $225/ton - just like you offered". However, Otis replies to Charley, saying "unfortunately, when we didn't hear from you we went ahead and sold all our remaining hay to someone else

what is the issue of SHABBY?