(this is all my opinion....of course)
There are morphs that have very recently become available (some examples are lavender albino balls and spider balls- and combinations), there are morphs that will be available in the near future (just 2 examples are leucistic balls, and piebald lavender albino), and there are morphs that have yet to have been discovered and/or combined (use your imagination - we'll probably see it some day- just check out the B&W ball pic on this forum- NICE!!). When all is said and done, there will be 3 dozen or more DISTINCT types of color and pattern varieties of ball pythons available- imagine 15-20 years from now. Considering the time required to see such projects to completion (small clutch sizes of ball pythons, they don't necessarily breed EVERY year) it stands to reason that it will take quite a while for the ball python market to die down. The future will bring an even greater divulgence between the reptile market and the ball python market. However, prices will and MUST drop in order to further expand the market. However, there is no reason to believe that the market will crash (as some people do). This is not an economic imperative, this is due only to people's perception and fears. And consider that even if the prices were to suddenly be cut to third of their present values, the effort would still be highly profitable.
Now the real question for you is WHICH ONE TO START WITH? ...Choose carefully. With little money to spend, I recommend going with a morph that the general public finds to be most attractive. Remember, you want an animal that has the most potential to mov into an expanding market. Eventually, the animals you produce will find their way into the pet trade (i.e. the general public).
I have albinos, so you might expect me to be a bit biased toward albinos. Well, that's true. A good contrasting albino is still one of the most attractive morphs available and the prices have dropped into reality.
So, I will use the albino as an example: Albinos are still being sold for low to mid 2K, and can be purchased from more obscure breeders for mid to high 1K as well (i.e. I offer my '04 hatchlings at 75% of Bob Clark's listed price). I predict their market value 3 years from now to be from about 3/4 of present value, or about $1800 from established breeders. However, you may have to go less than market value if you are an unknown. Either way, you should be able to sell albinos that you produce 3 years from now for a bare minimum of $1200. You might pay 10K for a group of 2 males and 4 females today. But if you get ONLY 2 good clutches in 3 years (12 hatchlings) and sell them at only 1.2K, then your investment is recouped (for both animals AND equipment) and the REST IS GRAVY. That's the way I look at it. For most any morph, one has the ability to recoup their investment AND MORE after the first year of production. Even if the prices dropped to $500 by the time you produce, if you get all 4 females to produce (a distinct possibility) then your initial investment is still recovered. AS LONG AS YOU CARE FOR THE ANIMALS AND KNOW WHAT YOU'RE DOING, THE RISK IS FAIRLY LOW.
The newer and more attractive the morph, the better the investment. Of course, not many have the money to spend 70K for a pair of het leucistic ball pythons, or 10K for a pair of het lavender albino ball pythons.
I don't understand the market nearly as well as those who have been active for the last decade. But, I expect the average prices for many morphs to start dropping in several years in order to expand the market. EXAMPLE: A morph for which let's say 100 animals exist today might command 10K due primarily to its rarity. However, I believe (I could be VERY wrong) that similar rarity in the future cannot command such a price. Eventually, we will approach the limit of how many people are willing to pay several thousand dollars for a snake. However, this does not mean breeding ball pythons in the future will not be well worth the effort.