...then you're off by a few years. There's a brand spankin' new Sega Master System out recently. It looks like SMS 2 console but it's WHITE!, sports a total of 74 built in games (including a 20 in 1), and can play any other game carts. SMS never had any region lockout so you're still able to play any other games.

www.pontofrio.com.br
and
www.casaevideo.com.br

Tec Toy site: (with list of games but it doesn't expand what's on 20 in 1) Tec Toy

The price seems to be about $70-$80 USD

Let see... from '86 until '03... that's 17 years of continued Sega Master System production! and Tec Toys shows no sign of stopping!

Compare with other long supported consoles:
Gameboy from '89 to current, 14 years
Atari from '76 to '92?, 16 years. The discontinued year is still questionable, could be '91 or '93, although you can argue that Atari 7800 should count because it was compatible with 2600 but I don't know when 7800 died either.
Intellivision from '81 to early 90's, anyone know for sure when INTV quit?

I'd love to get that white console. If the basic internal is the same, it should be easy to add 50/60HZ switch or permantly convert to NTSC console (It's PAL-M BTW)