I have a short rifle from the Québec Garrison Artillery that has NO DC in diamond, having been acquired and issued before Confederation. My other Snider, bought from a very kind gentleman here a few years back, makes up for it by having TWO - one on each side of the stock.
TBH, if you read back through the archives here, you don't really need those costy Snider dies - even the cheap Lee versions are not exactly give-aways.
What you DO need is the correct size bullets from Martyn at X-Ring services in Spokane WA, a few of his ready-trimmed cases, some 20g wads. Later, when you've found a good load - something around 60gr of 2 or even 1 FG - you can invest in one of his bullet moulds for the type of bullet you've found shoots best in YOUR Snider. Many, MANY people here shoot their Sniders with great effect, but THE man to watch on Youtube is Rob over in BC - his articles on shooting the Snider are not only stupendously informative, they are great fun to watch, too.
Pukka Bundook is also THE man, especially on another forum that is for the most part muzzleloading, but his knowledge - added to that of Rob - heavily outweighs mine by a factor of about ten-thousand to one.