How many gift cards can I exchange for bitcoin?

I'm curious to know, as a cryptocurrency enthusiast, how many gift cards can I realistically exchange for bitcoin? I've heard of platforms that allow such transactions, but I'm not sure if there's a limit or if the exchange rate varies depending on the type of gift card or the current market conditions. Could you elaborate on the process and provide some insight into the typical exchange rates and any potential limitations I might encounter? This could help me understand better if it's a viable option for acquiring bitcoin.