Matchbox is no longer producing scale models long time ago. Most of Matchbox products are 1/76 scale, although some vehicles,just a few, are true 1/72. Almost all the vehicles range have been released also under Revell brand. I recently heard about a new release of figures sets also by Revell, we will see.
Original Matchbox products are hard to find, but time to time some appear on Ebay.
For figure set review we outstanding recommend Plastic Soldier Review site.