Skoorb,
Sorry, I didn't clarify myself. They would exchange w/o restock fee, if the product you bought is defective. Or, this is what I did, I ordered a mobile 2400 on 2/24/04. The mobile 2500 was out of stock at that time. Then on the next day, 2/25/04, the mobile 2500 was in stock again. So I call looked up my mobile 2400 order, it's already shipped. So I called Newegg and they said to go ahead and order the mobile 2500, and when I get both CPUs, just RMA the mobile 2400 and explain what happened and they will refund me 100%. But I guess this would not apply in your case or GZG's. Sorry for the confusion.
And yes, the mobile 2500 is exactly the same as the desktop 2500, except that it's default vcore is 1.45 and it's unlocked. What better thing can you ask for eh? And yes, they will work with any mobo that supports the socketA.
Good luck.