Quoted Text
How about a new 1/16 Trump King tiger for $315.00,....plus $112.00 for shipping   
That is ludicrous. I just sent one to a customer (granted only Fredericton to Halifax), and it was only $22-$23 to ship. Honestly, it kind of shocked me that it was only that much, as I expected it to be much more, considering that the damn thing weighs 10kg (22lbs for you non metric people). 
I too sell on Ebay, but it is only there to supplement sales in the shop. 
I charge what Canada Post tells me to charge. I don't charge a "handling" fee, a "box" fee, a "have to drive it to the post office fee", or any other fee, whatever the size and weight tells me on Canada Post...that is what the customer pays....all the other stuff I consider the price of doing business, so why should I gouge the customer for it. First of all, 99% of all my boxes are ones either I pick up from the cardboard dumpsters, or my wife brings home from work.....so they are free (and there is no excuse why other Ebay sellers can't do the same). The paper I print invoices and shipping labels from, comes from work. My wife has to drive by the Post Office on her way to work....so there is no extra trip (not that it would matter anyway). So in the end, the only extra for me is the ink on the paper, and my time. Considering that my business is the hobby shop, then I consider it all the cost of doing business....and besides....if some of these Ebay sellers were running a legit business to start with, then most if not all of their costs for doing business in the first place, is all tax deductible......so in the end, they get it back on their taxes, all the while gouging the customer in the first place......sounds like a classic case of double dipping to me!!
As far as "not combining shipping" because they are too busy.....this is your job!! How about a little customer service. 
I suppose depending on how you look at it, I guess by the letter of the law, I don't combine shipping either. But if Canada Post tells me that kit X costs $10 to ship, and the customer wants 2 of them, then I don't double up the shipping, I charge what CP tells me to....which might end up being another $2-$3 to ship 2 of them, as opposed to one. Depends on where it is going....within Canada for sure, to the US.....it can be slightly more.....once  you get into International shipping....then its a whole other ball game alot of times, sometimes ending up being cheaper to ship multiple kits separately as opposed to all in one box. 
Am I getting rich doing this? No...not at all, but I would rather have the same customer come back multiple times for their modeling needs, rather than them buy one or 2 items, me ripping them off, and then them never coming back because of it!