Fair enough. One practice I do when I have to sub something out is to reveal only part of my budget. For example with the 20 page site due in 7 days for $20,0000.00, I may hire two extra coders with the following:
“Hey, got some weekend work for about $600, and I maybe able to swing $800 if we don’t get too many changes back from the client”.
If it ran over, I could still pay my helpers about $300-$400 a day, and still make a decent profit.