My LX-7 transducer has failed and I'm having lots of trouble finding one at a reasonable price. Marcum wants $160 plus shipping for the dual beam, but if you send the head unit and transducer back with $125 (plus return shipping) they will fix whatever is wrong with both, including transducer replacement. That's probably what I'm going to do. If I'm fishing anymore this season it will have to be blind, which isn't anywhere near as much fun.
PS Sent it in this morning. Return shipping was $17, cost me $13.65 to ship it to them via flat rate box. So total cost will be about $156, still less expensive than getting a transducer alone (from them).