Cheapest .co domain transfers

After a busy year & nothing being done with a number of .co domains, I now have to make the decision to renew or not!

Transfer prices are all pretty expensive...

So far the best I can find is using the 30% gdz739a GoDaddy coupon - bringing it down to around $20

Anyone know of other places?

just get new ones. it is $15

that would mean letting them expire first