beekeeping is one of the few hobbies where you can easily trun your hobby into a paying intrest, certainly enough to cover your costs.
the biggets issue is to work out how much it has to produce and then devid that by the hives needed.
I would suggest that you try these figures first and then as many do alter the prices to suit your markets
HONEY,
up side,
average crop of standard honey from a hive can be between 10kg to over 100kg but estimate that you could get on average say 15kg or 30 jars , cost of jar is say 100p with lid and label, you sell the honey for £4.50. posible earnings of £3.50 per jar times 30 jars equals £105 per hive.
down side, costs do not include running costs over heads and equipment pay backs and labour.
you can if your lucky find a good selling point and sell a jar for £10 each and then again you could sell your honey for £3 so lots of posible alterations in money
WAX,
upside,
on ebay wax sells on average for £10 to £14 per kilo depending on its shape and form and quality, an average crop of wax from a hive is about 2 kilos with trimmings through out the year and cappings, so another possible £20 here
down side again we are still missing labour and over heads
NUCS.
upside,
like your self most ppeople will happily pay from £125 to £175 per five frame nuc, a full hive of bees can easily be split into ten with 9 new queens you have a possible earner of £1250 per hive which it is in theary posible to do twice in a year, you say you have a few hives so between the lot it is possible to do 20 nucs twice in the year again a possible of 40 nucs at £125 each will give us a earning of £5,000 in cash a tax free income
down side
for me for every ten queens i have produced i have lost another ten and as for me last year one slip in the weather and you will end up with absolutly nothing, also for every ten queens i have i will end up with say five that are naff, poor, angry, evil, satanic, and will just swarm off else where.
hope that helps.
as for making to sell equipment there are to many other trades men and others who can easily out produce and out quality my humble wood butcher skills so i would not even bother to sell item i have cobbled together as there is no profit in it