The upgrade for MSM is free. You will need to upgrade ExpressionEngine itself which needs an active download account, and then is $50 (the price difference between EE 1 and EE 2).
Sorry to bring this topic up again. I’m just having a few problems myself. I have purchased the EE2 upgrade, but the latest version of MSM that I have access to is still only version 1. It doesn’t say it’s expired or anything like that, so was just wondering if I’m being stupid or if this is just glitch with my account that can be sorted out?
MSM is a free upgrade so you should have version 2.x of MSM available in ‘My Purchases’ on expressionengine.com. If you do not see it there please contact .(JavaScript must be enabled to view this email address).