Since a significant number of people don't like seeing the surcharge or "net to me" remarks in a sales thread, like many others have suggested, I agree: we ditch it. One set price.
Before I lose you, here's my reasoning: Obviously lots of folks don't like the surcharge. It's a significant enough number that these types of threads keep coming up. If we, as a community, move to a "one set price" rule we eliminate those threads, complaints, flag-waving, whatever.
"But then I'm losing out on money!"
I disagree. Paypal tells you to charge whatever you want to receive on an item with consideration to fees. If you want $50 + .30 + 2.9%, do the math yourself and post your price. Once everyone follows this model, the baseline for aftermarket prices will settle and buyers won't think twice about paying $51.75. You get your $50, you're not charging a separate surcharge, everyone's happy.
"But that means if I pay by money order, I'm losing out!"
This one is tough, because Paypal only says you may not charge a higher "handling fee" for Paypal vs. other payment methods. I suppose it's up to each individual to determine what is a handling fee and what is a discount "out of the kindness of your heart" for offering the convenience of a money order to your buyer. I imagine money orders make up a much smaller percentage of payments here on BF and the issue probably won't stir up as much ire as the surcharge. If you feel it does, start a thread and see if it gains traction.
On a related note, when you go to a retail store, you're paying one set price. You buy a pair of shoes, you're charged $99.99. That price was set by the retailer with consideration to credit card fees, which they pay to the CC companies in order to offer you the convenience of said payment method. You don't receive a 2 or 3% discount for using cash or check. Sad fact of life. That might not make you feel any better, but at least you can recognize that the Paypal fee isn't an isolated affront to your wallet. Should you decide to sell on the forums yourself, you'll get your revenge.
"You'd better be paying taxes on all online purchases!" You'd better not be selling prohibited items!"
As an online community, we can't reasonably police every minute activity that our fellow members participate it. Maybe you're not paying taxes, maybe you're downloading MP3s on the sly instead of paying for them, maybe you throw out batteries in the trash can, maybe you pinch a grape from the bunch at the grocery store. Irrelevant. While these types of arguments may serve to divert attention from the issue at hand, that's not the matter that's getting a ton of attention. Paypal surcharges are. Feel free to plead your case regarding those matters before the Bladeforums community and we'll see if it's got legs. This one does and people want a resolution.
Math is hard! Can't someone else do it?!
Hey, I hear you. I hate math. There is no one worse at adding numbers and percentages than myself, yet somehow I manage. You will too, I promise.
I know it's not a perfect solution for everyone, but rolling the fees into your final price will silence any detractors and you still get paid. I think it's the best solution for a sticky subject and I'd definitely like to see it implemented.