on what properties you have redeemed the vouchers.did u able to redeem it at properties like taj exotica goaThe membership main feature is 1/2 nights free stay plus one set lunch for 2
Only these 2 features are enough to give a higher return than the membership cost itself
Rest are bonuses
Also for stay discounts , try to book properties where no aggregator discounts are available , in that case 20% on best available rates are good