Thank you for reaching out.
Hi, if I purchase 199$ Plan, will I get all extensions mentioned under "extensions" menu?
Yes, with the Developer Bundle license, you will have access to all extensions.
I mean will I be getting these 3rd party plugins too, right?
No, we only provide/support the integration plugins, not the third-party plugins.
I am also not able to buy anything from my credit card, can you please check if my email ID is flagged or what?
Your credit card is flagged by the payment gateway. Please try to pay again with another card or PayPal.