I believe they only charge something like $35 or $50 to list but I think they charge a minimum of something like $2000 in commission regardless of how much it sells for. So if you list it for less than $2000 the difference comes from you. In addition to the bluegreen transfer fee they charge the buyer something like $650 in closing costs. Most bluegreen contracts are going to have a resale value of under $500 and there are enough owners just looking to get out that I don't think pinnacle makes many sales per year.
At one point Pinnacle was the place to list a small points package and you could buy for $1.25 per point and get charter/vip benefits. Several years back they changed it so that to sell with charter benefits you have to let Pinnacle price it and the smaller the package the higher the price per points. So the only packages they would sell with charter benefits for anywhere near $1.25 per point would be 50,000+ packages so still over $60,000 and there is very little market for someone looking to spend $60,000 on resale even with the benefits.
If you just want out you probably would do best just to give it away with the buyer paying the transfer fee. Depending on what you own, bluegreen might even exercise ROFR and take it back (which if that were the case they should have just accepted a deedback), but that isn't the way they do it.