you not going to like what i have to say, but this is how EBAY works if you choose to use it......
If you had some funds in there prior to you selling, it could have came out of that. and check your settngs on where you charges for selling fee's etc..come from, you have a "first source" settings for that, and if those funds are not there, you have a second source to cover it. that money is held to keep good customers from being ripped off, its just the Law of the land in EBAY world. I believe you can have the funds come from you paypal credit card first insted of your bank account insted of your bank account, (paypal likes those interest fees!)
in the end EBAY does a good job of protecting everyones interest, i feel secure in buying and selling on EBAY.
3 years ago when I had a work EBAY account establised and the "BOSS " was out of state, over $10,000.00 of sales were frozen,....and rising because you can still sell product, but not access the funds. it took 20 phone calls, 1/2" stack of faxed paperwork and 7 weeks later, it finally got resolved. and the original problem??? no one knows, it could have been a security freeze when the account gets that high??? guessing, but in the end it it there to protect the funds from being stolen. so I do understand your frustration.