How you guys keep paying Adwords?

I'm newbie here.

I own an e-commerce store and using Adwords PPC bring traffics to my store and it start having sales just this week. I used coupon from BHW members ($100) and now my Adwords's balance will deplete soon.

I wish my online store keep having traffic come in & make sales with Adwords but I do not want my account get ban with any Black Hat. What should I do now? Any 'legit' way to get cheaper Adwords coupon or any other thing?

Buy VCC Adwords account? If I bought them, how to 'use' them? VPN?

Please help.

You can only use one coupon per account.

If the traffic is converting for you, plug a credit card in?

As you can use only one coupon for an account, if you want to continue getting the traffic and the sales, use your credit card. Continue improving from there to get more traffic at lower cost.

You can prepay your balance, if you are making more sales. Dont be greedy with adwords vouchers. Once if they find, you are advertising same website, in multiple accounts, your website is banned forever.

Google bans site used on multiple accounts

thanks guys, ya, can't be greedy for Adwords vouchers..

Now I decided to prepay my Adwords.. any good guide to optimize Adwords the white hat way?

You can start by getting ur top keywords in ad text for higher CTR. getting your keywords on your landing page will help a lot too