How do you respond to lowballers? Just ignore them? I had somebody offer $150 on a bass listed for $700. Do these people expect a serious reply?
I have made "low" offer before. I had a certain brand of precision style bass on my want list that showed on Reverb listed for around $7000, which was more than I was willing to pay for the bass. My best estimate was the bass was valued between 3000-4000. I made an offer for $3500. The seller almost immediate removed the listing. A few weeks went by and I received a special offer for around $3700, which I countered with $3500, which the seller accepted. To be fair the way the bass was listed was probably not coming up on peoples search query if they were looking for that particular bass.
For low ballers I typically either ignore or counter the offer.
