I'll go a different route. Are you handy at all or creative? Do you have any upgrades in the future? Have you owned tanks previously and if so looking back did you try and keep up with the Jones or have a high turnover of equipment rate? Lastly, do you take care of things or are you more of a lazy reefer (I am - just being honest) and work on Hawaiian time?
I'm being serious because some of these answers can help save you some money.
1. If creative or DIY capable - build your own lights. LED multi channel such as Nano-box or Blue Acro - and others - can provide more than enough PAR/Spectrum to keep any corals. Especially soft and LPS. Of course the creative part is the packaging and making it neat
2. If you upgrade, or even think you may, and be honest, then buy over sized or larger gallon supported equipment. Take a skimmer for example. I'm using the same skimmer I bought in 2000. At the time I bought a life reef skimmer and knew I may upgrade from my 100 gallon tank. Guess what, I did. Today I have a 210 gallon tank and that same skimmer is going strong. Saved 400-500 dollars right there by buying something with a future. Same with return pumps, power heads, and lights.
3. Keeping up with new technology or not having a play = buying the same product (skimmer, pump, light) over and over again. However, if you have a plan or goal in place (size, what you plan to keep, features you must have, those you don't) means you pay the premium one time and not repeatedly.
4. If you take care of equipment (cleaning, maintenance, etc) then they will last a lot longer. Similar to #2 above regular cleaning of pumps and lights and stands means you buy once and it will always be in working order and you buy what? One time
5. Buy frags from LFS or clubs. Do not buy chop shop or designer corals. Ebay is also a good source. Look at what you want to keep, calculate to price per frag, and then use that as your base. Do not include shipping costs but set a price per frag you are willing to pay and that is your baseline. Then as you shop online you compare and decide if it makes sense. 5 to 12 per frag is my ballpark so clearly I will never own a lot of the fancy named corals. Granted you will have to let the tank mature to show signs of growth but saving money is about planning.
Main area I can see to save is trying to plan what you want, buy things one time that may be able to carry forward if you upgrade and buy local or from swap. My tank has been up for a little over a year and it still looks like moon base 9 but it is what it is. Two in college, well, what can I say
Best of luck!