If you really plan to be a regular TB purchaser, why not bring your passport with you, run to SZ, active a Chinese bank account at any nearest bank over the boarder? link bank card to your alipay account, it should be 2000-5000RMB limit on daily transfer. Alipay provide much much higher interests than in bank in HK. They also have this new credit function, you can use alipay as credit card, they pay for you first and you pay back later.
i have many years experiences buying from TB. Just so you know, reviews are not all reliable. Not only ignorant customers who can recongize fake products, also many shops hire people to give positive comments. it's a business line already.
good luck with your shopping, with more experiences you can find many good products with good price. I just bought a chef machine from TB send from Germany, very good price, and the most advanced model you can't find in HK.