This is not a bad film - the plot is original - the sets, well, Western (!) - overall, it's better than average & quite entertaining.
There are plenty of laughs, plenty of zombies & some great action. It is not a blockbuster & was never made to be one. Budgets look like they were tight but they seem to have made up for that with some good casting & a funny script.
This is a tru zombie-comedy so if you liked Shaun of the Dead, whilst this is no match & no great event cinema - it's entertaining & keeps you watching.
My honest advice is try to catch it on the ZoneHorror channel rather than buying it unless you get a very good price. On the other hand, if you have the cash - it's good to support the zombie b-movies we all know & love.