Just thought to add this: coinvend is a convenient way to sell and buyers don’t have to know much about Counterparty.
DEx is more complicated (you can use testnet or make a free test trade from 2 different address from within your Counterwallet - you need testnet bitcoins for that - search the FAQs for “testnet”), but maybe in your case it could be used to buy back unused tokens.
For example someone buys 5 CONSULTHOUR and doesn’t use more than 4.
They can sell the remaining token on the DEx and you can buy it back there at a 5% discount.
That way you can simplify your customer support (that is, you tell people: we buy back unused tokens at a 5% discount).
Then, you monitor the DEx for any CONSULTHOUR sell orders, and when you see one, you buy it back.
Issues with this approach:
a) Anyone can do the same, so someone who may want to buy 3 CONSULTHOUR tokens from coinvend may snipe the DEx for sell orders. I think this is fine, and actually may even be desirable. Depends on your viewpoint.
b) Because DEx prices can be denominated in XCP or any other Counterparty token, they tend to be less stable, so if someone creates a sell order for say 50 XCP (which amounts to 95% of your current price) and within 7 hours XCP goes up or down, you may not want to buy it, or you may end up buying it at 80% of your current price at coinvend). So they’d probably complain in some cases.
c) Counterwallet currently doesn’t support denominating assets in BTC (it’s a long story, but it’s explained on the forum, search for DEx articles to see more about it), but the Counterparty protocol still does. So I assume with Indiesquare Wallet your customers could price their CONSULTLHOUR in BTC and it would be easy for them to do so (check your coinvend price and sell their CONSULTHOUR on the DEx for 90% of that price.)
Since BTC is more stable than smaller Counterparty tokens, this could work out to everyone’s satisfaction, but you should give it a try to understand it and decide whether it’s acceptable to you and your customers.
There are some details that are important but I can’t repeat them here, for example by default orders are active 1000 blocks and then they expire, and take couple of confirmations to appear (for the order transaction to be processed by the bitcoin miners), so after your customer places a sell order for CONSULTHOUR, maybe 15-30 mins later it’d appear on the DEx, and within 1000 blocks (1 block is approximately 10 mins) it’d expire unmatched if no counter-offer is made, so if you missed that window they’d only spend the bitcoin transaction fee and be upset.
And last but not least, another workaround is you could probably ask CoinDaddy to help you create another coinvend that sells BTC for CONSULTHOUR (that is, you would buy back your CONSULTHOUR through this vending machine).
Edit: another wallet that can interface to the DEx is XCP wallet which works as Chrome plugin (no mobile):