DrugBuyers.Com: Nogales mexico.... what to expect??

Well, just got back from visiting Mexico. here's my story.
We parked on the US side, walked over no prob.
First i see is a sea of Farmacia's. We looked in a few and asked about Valium and Ativan. I acually have old bottles of Valium and Ativan that i brought with, hoping to get a re-fill. The first pharmacies we went in, i showed them the bottles and they looked around and shook their heads no. This happened for the first 5 we went into. Most would say you need to see Doctor. So we asked where? and they said down the block. So we finally found the doc's place, but he was out till 3 hours later. So we then found ourselves into the town alittle, which was now good. We went in a pharmacy off the path and showed them the bottles and they had no problem pricing me out the meds. They only sold them in Quantites of 90 for Valium and 80 for Ativan, both name brand sealed in boxes. I felt like i wanted to do it legit and see a doc to write a mex presciption, just in case. So we walked in another pharmacy which seemed pretty nice, the lady told me she would sell me and include a script from a doc too. Prices including script 90#Valium 10mg Roche $80, 80 2mg Ativan Wyeth $95. So we did that, she asked for my ID to verify and called the doc, they she broke out a Script pad and filled it out. I felt very safe and she wrote the US Doc's info from my old bottles and we were on our way, We then Tranfered all the pills into my old bottles and proceeded to the border. We had a back pack with the meds in the lower pouch. They asked us at the border if we bought any meds, and i said No. They looked at the vase we bought and we walked right through! No prob. I didnt see them searching anyone and i was very nervous over nothing. I figured if they searched my bag and found meds how could they prove i bought them there?
Nogales highly recomended, just walk off the beaten touristy path and if i had more balls i probably could have found anything. I did see #90 SOMA for $20.