From a quick look in the UK, a Samsung Galaxy S4 (unlocked) can be acquired for about £250, an S5 for about £300 and an S6 for about £350. I believe the S4 is roughly similar in terms of processing power to the Pyra, as both it and the OMAP5 were released in 2013. For comparison, the range for the Pyra of 450-600 euros gives, as of now, £316-£422. Also for comparison, the Blackphone seems to sell for £450-£500, with an SoC that, I guess, is of similar power to the OMAP5 (Tegra 4i -- the Tegra 4 was also released in 2013).
I really would not expect the price to be any lower than £300 (425 euro, $470). I would NEVER buy a laptop that cost less than that, new (well, perhaps not never, but I would be very careful, or would expect it to be crap).