TWEASY
With invaluable you can literally bid on auctions in any country in the world. It’s pretty clear on postage and percentages asked by the auction houses etc. ( up to you to be awake aware). Once you have been with them awhile and become VIP ( as such ) the resources are really invaluable, previous auction results, prices estimates and the rest . One more thing is, you can always see what you were watching, bidding on or have purchased. Would highly recommend. RL