How long will it take approximately to implement a payment gateway and full text search in an Asp.net project. I never done both and has working in Winforms for a long time. Think this is not a technical question , so posted here
Payment gateways are like plug and play type nowadays. The providers provide most easiest API (secured as well) to implement. If you spent like 2 to 4 hours (MAX) fully, you will be done. I have already worked on ICICI payment gateway which is so simple, but old (they uses classic ASP still). I am not sure about Paypal or other providers.
When in trouble, call the police – even if you are a thief. Trapped inside an apartment they were burgling, with a crowd of 250 people waiting outside to teach them a lesson, three thieves decided that getting arrested was better than being lynched. They phoned the cops.