$300 may be your cost but a suit, hive body, a couple of supers, frames, hive tool, smoker, bottom board, oil traps and maqs cost about $900 for us because none of it is sourced locally and has to be shipped in from the mainland. Add more for the harvesting equipment. People have built their own top bar hives and that saves a lot on the cost, they are just harder to harvest and you have to be careful lifting out the bar because of the free form comb. We get queens for abut $20 from Hawaii Queens.
The biggest problem we have is that this garden is open to the public and volunteers and you know when bees take off in the morning they like to take off in the same direction. We have had to requeen aggressive queens because they attacked volunteers in the nursery and the orchard. It doesn't help that not everyone knows how to act around bees.
People call us when they have unwanted swarms and there is a number to call where people who want to capture swarms can go out and try to collect the swarm. It has to be collected while they are in a transitional place, it is hard to collect them once they have become established. Collecting swarms are not always that easy, sometimes they just don't like that they did not choose the location and they take off. We were lucky, we saw our hive getting ready to swarm and we saw them swarm to the mulberry bush 25 ft away. We only had supers available so we left the supers in front of the bush for an hour to see if they would go in by themselves. The branch the bees were on was cut and placed near the entrance. It took some coaxing, but once the queen went in the rest followed and we gave them a couple of honey frames from another hive to get them started. There was an estimated 15000 bees in the swarm.
The other hives we have are for solitary bees who don't make honey but can still polinate flowers. We also have a butterfly garden with milkweeds and the butterflies also polinate plants in the gardens. I get fiery skippers in the herb garden all of the time. Midges polinate the cacao tree.
Honey bees will polinate cucurbits but the squash bee is a specialist and it is a solitary bee that prefers squash.
https://www.ars.usda.gov/Research/docs.htm?docid=16595