You are correct that you should think about consulting an attorney. From a business perspective, you might consider a cost-benefit analysis.
One possibility is proceeding without any concern of the patents. In a worst-case scenario, the product is seized at the border and your business is stopped.
The other extreme is that you conclusively address all patent-related concerns at great expense.
The likely solution is somewhere in the middle, determined by your projected profits. The greater the profit, the more your analysis might point towards fully addressing the legal issues.
You can obtain more affordable counsel in this case if you are working only with design patents and have already identified the patents in question, having done a search. (A patent search, especially for design patents, is surprisingly affordable). A small firm or solo patent attorney will most likely be more affordable than a larger firm. Ask your colleagues for a referral, or look up some attorneys and ask for referrals for someone who might be interested in this work. Discuss cost up front and mention you expect to pay less for an infringement analysis of a design patent than for a utility patent. The attorney will probably be willing to provide a variety of levels of service for different costs and should be very clear what he will and will not do for various fees.
Another option is to pose this question to your supplier. The manufacturer often knows about competitors and key patents. They may even have conducted a freedom to operate search or analyzed some key patents. Good luck.