I run coupons once a month. eBay does not allow buyers to request a combined invoice when a coupon is used. I do combine shipping. I refund 15 to 25% of the total shipping cost. The percentage is dependent upon box size and buyer location.
I have lot of New and collectible O/O27 coming through mid September. I will doing some purging soon. Look for great deals on auctions
If you have a collection to sell or would like information about consignment, please contact me.