RE: How I lost a whole DEC in a moment!?

It is sad to here stories like this and I am sure there are many. I have wondered about the issue with rental cards getting canceled for a last minute cash grab at end of season.
The best advice would be to take a look at the market and work out what cards cost at normal price and then wait until end of season. Rent cards that have not had a big price increase. I say this as I do not increase the price of my rental cards and I am happy drawing an income from them and helping out those that rent them by offering them at a reasonable price. I am sure I am not the only person that does this, so definitely worth researching the market.
Best luck for the next season!