After you are done, sell the plane. You’ll get almost the same as you paid for it if you found a good deal and it doesn’t have more than 1000 hours since it’s last major engine rebuild when you’re done with it.

Plan on putting 200 hours on it. You can get a used Cessna152 for around $25,000 and they hold their value well. It’s simple math, if you buy a plane for $25k and sell it for $25k then your cost for flight hours is zero. But even if you sell it for $20k, $5k is so much more less then the $30k you can spend if going for a commercial license.

This way, all you pay for is gas, insurance and instructor. It’s the cheapest way to go. It’ll be a fraction of renting at $120/hr plus $55/hr for instructor. The average rates.

Oh, once you buy the plane, put it on the market, it may take you six months or longer to find a buyer.

Also, you can also lease the plane to a local flight school while you’re learning and make a few bucks. Just remember, don’t let it go above 1000 SMOH!!! (Since major overhaul) or you’ll loose money. A new engine runs about $20k. So you need to buy a plane with less than 500 hours SMOH.

Another option is, find a flying club where you can rent a plane for about $75-85 an hour and hire a freelance instructor. You’ll save 25%-30% off the price of a local flight school.
References :

LASEK uses a 20% alcohol solution to soften the outer layer of the cornea for easy removal. This layer is then replaced after the laser process has been completed. The major advantages of LASEK is a shorter healing time than PRK and no cutting is done as with LASIK procedures.
References :
http://www.laserimprovedvision.com/types-of-laser-eye-surgery.html

In LASIK, you cut a flap through the surface epithelium (approx 50um) and Bowmans Layer into the stroma. Generally this flap is around 90 – 150um thick depending on how good your surgeon / technology is. Two main ways of doing this are with a microkeratome (bladed instrument) or a femtosecond laser. An excimer laser is then used to ablate the required stromal tissue to correct your prescription. Flap back down and off you go. Quick healing time, no mess or fuss. But beware – plenty of potential complications viz: flap striae, folds, epi ingrowth, ectasia etc.

LASEK: Is the currently fashionable name for a type of surface treatment. It is known in other guises as PRK, Trans Epi, No Touch, All Laser etc. To access the stromal tissue, the epithelium and Bowmans layer are removed. In Trans Epi/No touch/All Laser, the excimer laser is used. In PRK, an instrument called a hockey knife is used.LASEK, dilute alcohol is used. Once this tissue is removed, the excimer laser removes stromal tissue. A bandage contact lens is placed over the eye and the surface tissue re-grows over a 3-4 day period. It hurts a bit and visual recovery is slower. However, risks are much reduced, mainly to haze.

Hope this helps

References :
I do this every day