Prefer price number which is close to currency symbol

[kmike]

Currently amount of items may be picked as a price, instead of the price number:

In [5]: Price.fromstring('3 Ausgaben für nur 14,85 EUR')
Out[5]: Price(amount=Decimal('3'), currency='EUR')

In [6]: Price.fromstring('Buy Now - 2 Litre Was $120.00 Now $60.00')
Out[6]: Price(amount=Decimal('2'), currency='$')

I think making price-parser to prefer numbers close to currency symbol (instead of taking the first one) may help to fix such cases - maybe not all of them, but at least some.