There sure seems to be a lot of old Saracens coming up on ebay now, or is it because of this place that there is more interest in them now...
Old Saracens certainly seem to have become more popular over the last couple of years. I would think that RetroBike has influenced this for sure.
The fact that they regularly turn up on eBay is a testament to how durable they were and still are. One should remember that Saracens were built to cope with year round riding in the UK, so while expensive lightweight American steel may have rusted away, the heavier powder coated Saracens shrug off a decade or more stored in a damp shed with the resilience of a cockroach.
That is perhaps why there are so many of them still around.
With the surge in popularity in cycling over the past couple of years and the 'bike to work' schemes, I reckon there will be plenty of people dusting off their old bikes to use them, or to sell them on for something more modern.