Both Bruce & Rich are upfront with their fees (I have never actually found written down what HA's are) so which is better value only comes down net return, all the rest is just salesmanship.
I have sent stuff to Bruce and nothing to Rich so I am not going to compare (who is better); but it's not rocket science to work out what one gets for each poster sold. I worked up a spreadsheet with a simple formula that tells me how much I have earned based on the hammer price of the poster I consigned. I also used this same formula to decide which poster I will send (based on possible sell hammer price), after all there is no point sending a low value poster (specially from this country). So provided Bruce's commissions haven't changed recently, if you're interested:
Open up Excel
In cell A1 put the name of the poster: eg Hannah and Her Sisters
In cell B1 put the number of posters of that title you are selling (and shame on you)
In cell C1 put the price you hope to achieve for that poster
In cell D1 copy n paste this formula: =IF(B1<7.99,B1*0.75, IF(B1<11.99,B1*0.66,IF(B1<19.99,B1*0.6,IF(B1<29.99,B1*0.5,IF(B1<39.99,B1*0.4,IF(B1<69.99,B1*0.35,IF(B1<99.99,B1*0.3,IF(B1<299,B1*0.28,B1*0.26))))))))*A1
*note ensure you copy the above formula as one line. The formula is only for posters under $299, I got bored typing the formula so stopped
In cell E1 copy n paste: =B1-C1
The result will show much Bruce takes and how much you get.
With Rich it's easier to calculate, he takes 25% no matter what.
To be honest it's not as simple as who sells the poster based on the commssions, the smart people will work a high and low price end scenario and then make a judgement call. But as we all know about auctions, there is no guarantee of the hammer price!
Have fun.