Recently I became interested in shoulder holsters and found that those from the "first line" makers all carried 3 digit price tags which, for me, was way too much to spend to experiment on a system which may, or may not, pan out. I discovered the Triple K shoulder holster in Cabela's and bought one for my Dan Wesson CBOB which is an all steel 1911 in Commander size.
I found the holster to be made of quality, soft leather which fit my CBOB quite well and, with some experimentation, adjusted to fit my carcass (6'3' 260 lbs.) quite well. Resulted in a comfortable and concealed system which I like. Cost $75.00 which I found to be within my "experimentation" budget. Like the system and wear it a lot these days. I recommend it highly.
I recently purchased a CZ SP-01 which is a large, heavy 9 mm pistol. With a full mag of 19 rounds mine weighs in at 48.5 oz. which I think is quite heavy. I thought that a shoulder holster would both conceal the pistol and distribute the weapon and a number of posters to the CZ Forum recommended the High Noon Under Armor which, for $80.00, was in my comfort level of "experimentation"!
The holster holds the pistol and two extra mags of ammo quite handily and comfortably. It is made of a synthetic material (not leather) but is soft and pliable and fits me quite well. Once again, I recommend it.
So for just about the cost of one of the big name holster makers I got two shoulder holster which fill the bill admirably. FWIW