I don't think the fixed basket of goods is the best measure of purchasing power for this case.
I'd use the income value (aka "economic status") as a comparison, since IMO, you're really trying to scratch at "what is two and a half year's income worth now vs back then?" That figure is £181,600.00 from the same page you link, or £72,640.00/year.
Now, why don't laborers make that much now is an interesting question perhaps. I suspect it's because the relative position of a laborer in 1300 was middle of society and today it's not. Consider how valuable a strong, healthy, reliable worker would have been then compared to today.
There's also a labor figure on that page, which would amount to £27,656/yr, which seems inline (perhaps slightly low) for a laborer today.
I'd use the income value (aka "economic status") as a comparison, since IMO, you're really trying to scratch at "what is two and a half year's income worth now vs back then?" That figure is £181,600.00 from the same page you link, or £72,640.00/year.
Now, why don't laborers make that much now is an interesting question perhaps. I suspect it's because the relative position of a laborer in 1300 was middle of society and today it's not. Consider how valuable a strong, healthy, reliable worker would have been then compared to today.
There's also a labor figure on that page, which would amount to £27,656/yr, which seems inline (perhaps slightly low) for a laborer today.