With 10% interest rate (compounding) the 6 equal installments is coming at 2,296$, so if we are getting 2500$ which is way more then 2296 then I should accept the offer.

Formula for installments -

E = P×r×(1 + r)^n/((1 + r)^n - 1)

where

P = 10,000

r = .1

n = 6