So I've got the original WST Soundwave and WST Optimus with complete trailer available for sale. What's the general going rate on these? I generally check ebay for average prices and then cut a percentage off of that. Looks like $35-$40 would be a good deal for Soundwave, but the only price I can find on a legit WST Optimus trailer is TFSource, where they had one listed for $99?! Is that right? I don't want to rip anyone off, but I would like to get a good price for what I'm selling.