Ya. there is free samples and discount too. But warehouse sales will be the best. Best to get after 12 weeks cos most M/C occur before 12 weeks. After that you are pretty safe.
Get the baby stuff slowly, no hurry. I started getting mine slowly over the months. Went to tollyjoy warehouse sale, it's really cheap. I also go to flea markets at east coast, there is second hand baby stuff. But detergent, baby powders, towels, diapers get during the last tri. Also, some of your friends and relatives will get stuff for you also or give you second hand items so check with them also.
I got most of my stuff expect for stroller, bathing tub and baby cot. Will be going to the fair to get some glass baby bottles and milk warmer.