I won an item yesterday afternoon, and sent the system-generated email to the seller to sort out payments (they'll only take cheque etc.). Unfortunately the system-generated email insists on you saying "I will be sending payment shortly" etc. etc., but what I actually want to say is "I will send payment as soon as you tell me who to make the cheque payable to" -- I suspect neither "vic" nor "killingfantasy" is likely to be the name on the bank account! So I added this request in the eBay email, but I've had no reply, and I suspect they've glanced at the system-generated email and said "ah yes, payment coming" and not read any further.
On the other hand... not everybody checks their email every 2 minutes like me. Would it be rude to email them again and say "Not heard from you ... please tell me who to make the cheque payable to" etc.?
On the third hand... you'd think if somebody only takes cheques it might occur to them that their buyers need to know who to make the cheque payable to, FFS. And that they might make a point of checking email just after a sale.