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Thanks, I'm just getting my head around the rule which allows you to take an action, then take the reward to be able to pay for the action taken. Think I must be used to playing games where if you can't afford the action you can't take the action. Yep - that catches a few people out.
I sometimes explained it as a very short term loan with 0% interest, but must be paid back by the end of your turn. You borrow some money from Dave... You know... Dave... he always lends people bits of money for the turn but needs it back asap.