Cost of the mats:
About 200 Rs. per Square Meter. Good tent canvas. Lifetime about a season, I would say.
A watchman that sleeps on the mats at night, should be available for about 3000 Rs. a month, so for Shelar and Tower Hill East and West, it will be around 9000 Rs. per month. Flying season from October to May should be about 72.000 Rs total.
PS. Personally I feel, groundhandling is the worst for a glider, so mats at the take off do not really matter for people who go out for groundhandling. A quick take off does not really spoil the glider. Mats are nice, if you have grabby underground, that "captures" or cuts the lines, but Tower Hill and Shelar are more smooth in this matter.