This is currently NOT happening.
The 10% fee is being taken IMMEDIATELY when Buy and Sell orders are POSTED to the market and then another 10% Tax is taken a 2nd time when they are accepted for a total of 20% Market Tax... not just 10%. Then if an order is cancelled, the Posting 10% fee is NOT returned.
Please change your description to accurately reflect the changes that were implemented... or fix the 10% surcharge to the market which according to your description above should only be charging the fee "when accepting" ... when WHO is accepting the Offer... the person posting the offer or the person accepting an offer on the market.
Had you said that the commission is added to offers when they are "POSTED to the market" we would have understood that they are paid for "UP FRONT" . Instead you mislead by suggesting that an offer on the market has hose fees collected when someone "Accepts" an offer to Buy/Sell that is already showing on the market.
When you "Accept" an offer that has been "POSTED" to the market... those calculations are showing up a second time... so the Tax is actually 20% as it is being charged on both the Posting of the Buy/Sell offer AND when it is "Accepted" buy the Seller/Buyer who sees it on the market
Day 5 of 1939 map.... NO new sell offers have been posted since those on Day 1... Market is DEAD.
I am sorry if the description caused confusion. I will try to update it, to make it clear. Regarding the issue that the fee is not returned when an resource offer is redrawn from the market is working as intended. The fee is charged whether ressource are sold or removed again.