A few thoughts: First even on evil bay things are negotiable; become knowledgeable about what something should sell for if it's priced too high and politely make a fair offer even without "best offer" noted; become aware of actual shipping costs and again negotiate. don't know what the seller is asking but that item can be sent anywhere in the U.S. for less than $7.
Now for some thing else. If you get it let me know. I might have a pair of ALCO style side frames hidden away somewhere that i'll give you for the cost of postage. I'll check my stuff in the Toronto half of the next inning.