Offline listing on a Mac?

Does anyone know of offline listing solutions for Mac users? I've got two offline listing programs and I hate them both and I'm looking for a solution to being able to list offline or someone to convince me the programs I have do NOT suck and I'm just an idiot. I'm in the process of selling a ton of stuff off from my house (things I no longer collect, hobbies I've given up on) and I need a solution.

I have:

iSale5 This was my go to program for a long time when I had a few things to sell. Why I've grown to hate it:

~~I've emailed Equinux (the publisher) twice for help in making it work putting things into my store and it just won't work. Their response time for problems has been a week or more and their solutions to this just plain don't work.

~~The pictures now give me the warning that they are too small pixel wise for ebay and the gallery thumbnails at the top do not work

~~auctions have to be uploaded one by one and takes forever. I get the spinning ball of death.

GarageSale Poor instructions and counter intuitive. I gave up after struggling with it for two hours.

So any suggestions other than puy a PC so you can use TurboLister? ;) Seriously though, I'm thinking about getting a cheap PC just for this reason.

Thanks in advance for any help!