Depends on the market. I don't usually take in less than 4. Best if you can make sure they're matching, so all ewe lambs or all ram lambs. When you phone the market to book them in tell them exactly what they're getting - tell them if ram lambs haven't been ringed. The local phrase is "stones in". I've got "4 Southdown X store ram lambs, stones in" going into Hereford market next week, for instance. I always make sure my lambs look good, so check their feet and dag them if necessary. That way you build up a reputation for good stock and the price improves, but it takes lots of time!