They are exi, yes but IMHO worth every dollar. Once you get a set you will wonder what you did without them. SCA has cheaper versions but are just not as strong. My first set was SCA ones and they were great until I abused them by hitting them with my palm to loosen nuts, which damaged the gears causing them to slip now. My Bacho ones don't get the same treatment as I realised I needed to be more careful with them. I now have imperial ones as well as a set of stubby ratchet spanners that get pulled out about once a year for times that you have a really tight space, where the longer ones don't have enough room to work them.