Are you going to trade on localbitcoins by p2p? A lot of buyers prefer to pay the amount when they receive the payment. But in localbitcoins, when you open the trade the rates will be freezed until the deal is completed.
I was exchanging some money from Bitcoin to Indian rupees, but here comes a problem that the receiver told me the conversion rate will be done when he receives the money
You are not the only one, everybody is doing the same, you only need to have at least a little piece of brain to know that you always need to sell at the highest price as possible.
I did more than 5 transactions, but here all exchangers are adjusting the low conversion. We choose to trade when the Rate is high and these people shows when the rate is low on that day.
But most exchanges (p2p ones) are working by that way.