Adolfoi's are a great Cory, very easy to sell on. I got a group from the shipment HFF got in about 2years ago, Bred very well and regularly.
Downside is the spawns are very small, I was getting about 20 eggs per spawn, aprox half were viable.
Very large eggs and mine didn't touch them (fry were still fair game tho), upside of that is they can take bigger food, microworms, decap brine shrimp straight away, no worries about feeding green water, infusoria etc like some other cories like Trilineatus (fake Juliei)
Major downside with them is growth rate, I could have increased it but only had time to feed once per day, occasionally twice/day.
I did an experiment, grew out bronze cories in same tank, spawns were within 2 days of each other.
Bronze were 3+cm within 6-8 weeks
Adolfois were sitting at 1cm
It took me about 4 or more months to get them to saleable size, even then they were small and couldnt get more than $10-12 each from a local fish shop (I only sell to fish shops, club members and other breeders) which was IMO a fair price, but do the maths.
My group was about 10 fish I paid $50ish each as they were the first shipment in years.
Grow out for 6+ months till breeding thats about a year before you can recoup your investment and all that time you have to feed the fry pay for heating etc.
Unless you had a perfected setup, live food, a super efficient fish room and time to feed em 4 times a day, I'd go with sterbais, panda's or some of the new lines that have come in lately.
Saleable within 8 weeks and bigger spawns.
But following that logic Bronzes can spawn over 200 at a go and have IMO the fastest growth rate, saleable at 6 weeks or so if you feed em hard out.
if you can move them on at $2 each thats a nice $400 every 6 weeks, less costs.
The hard part is not flooding the market, That is why I endorse only selling to LFS as they can turn them over. The difficulty there is unless you have a rep for quality and reliability most wont take em from you.
The reality is you may be able to subsidise the hobby by breeding but you will never make any real money out of breeding (unless you invest a huge sum and heaps of time)
I personally breed for fun and to secure species in NZ. The Market is just too small and as we are a colder climate you will loose all your profits because we are restricted to growing out in tanks, not ponds like tropical countries.
HTH Owen