I bought a rolling bag for my sewing machine at Harbor Freight. It has an retractable/extending handle like luggage. Carefully check the base dimensions of your sewing machine though - my older machine fits perfectly, my newer computerized one is too large!
It was available with a second "tool" bag that worked well for all the "extras" like scissors, etc. -- my DH has borrowed that one.
I think the two pieces were $30 range but they have 20% off coupons in nearly every ad.