I have never sold by auction, but it looks interesting. I have contacted a few auction sites and they take on average a 15% cut on all sales, plus most of them have a limit of value you have to submit.
Example, I contacted Heritage Auctions and they responded, saying they would need a $5000 value limit to post in their auction.
Posting on forums like this is of value also, as well as eBay. Also on local free selling sites can work as well.
These sheets vary in value depending on prefixes, BBU is common, book value is $130 to $170. Where a BRX prefix book value is $2,600 to $4,000.
I follow these sale prices a bit and in recent sales your prefixes have sold from $149.86 on the low end to $248.40 on the high end.
PM me with what you want for it, maybe we can make a deal. Keep in mind these come up for sale very often. I am in Montreal.