Here is my estimations so far on the Lupo 3L:
New tyres 400$, would have needed change them anyway...
Some test wheels 50$
ABS plastic 70$
Glasfiber stuff 100€
Oils and lubricants 100$
led and ksenon lights 200$
Other minor mods: 150$
Total wasted at least: 1070$ and in own time easily over 200 hours
Driven 15192 miles, Savings about 240$ (15%)
Positive driving feelings priceless!
On my seat the same table would be totally different as looks were no consern.
Parts 400$
Time same 200 hours
Savings 1934.02$
So I am still on the savings side totally
.