My investment in TS is similar, may be a couple of hundred this way or the other. But TS was a pioneer and their ware - stb, quality of video and service was far ahead of dishtv. Installation of ts was professional with proper mounting of dish, routing of cable and clamps compare to dishrv, who use dto install like the local cable
tv operator - nailing of antenna, point to point cabling, tieing cables with hemp rope or wire. Even the user interface was better in TS.
TS was the first to introduce recording facility. SD was nowhere in the scene then. Of course there are more operators now and prices are decided by competition.
On the whole, TS experience has be quite satisfactory and well above average.
So it looks you have invested much money in
Tata Sky itself.., But people who get a SD connection now they are Just needs to pay 999 only. and HD itself for 2500....
But i do not know whats there to promote that they are giving bonus credit., as in Tatasky subscription charges itself comes around 300 with required channels on average.