...cut up by wooden partitions into forty rooms. The rooms were small arid inveterately dirty, for there was no maid... The walls were as thin as matchwood, and to hide the cracks they had been covered with layer after layer of pink paper, which had come loose and housed innumerable bugs. Near the ceiling long lines of bugs marched all day like columns of soldiers, and at night came down ravenously hungry, so that one had to get up every few hours and kill them in hecatombs. Sometimes when the bugs got too bad one used to burn sulphur and drive them into the next room; whereupon the lodger next door would retort by having his room sulphured, and drive the bugs back. It was a dirty place, but homelike... The rent of the rooms varied between thirty and fifty francs a week."
Going by a PDF I found - in French, so I'm muddling a bit here - in 1929 figures - the year that Orwell left Paris to return to London - the (2008) equivalent of 30 to 50 francs was €16-€27.
Of course, that's a very simple conversion that doesn't take in to account the relative worth over time. And, not surprisingly, it's tricky to work out the actual worth of 1929 francs in today's money.
Further on, though, Orwell talks of his financial situation: earning 36 francs a week giving English lessons; he's paid 200 francs for a month's rent in advance; and he has 250 francs in savings. And then, thankfully, he makes my calculations a whole lot easier: "Six francs is a shilling."
Therefore, using the same calculations as in the notes on the last photograph, I'm able to work out - in terms of average earnings - how much, relatively, things cost.
Six 1929 francs = one 1929 shilling = £9.60 or €9.84 (2009)
Which means in real terms, 30-50 1929 francs is more like €50-€82. Which is a bit different to €16-€27.
So Orwell was earning roughly €60 a week giving English lessons, had paid €328 for a month's rent in advance and had €410 saved. That is, before an "ambiguous" Italian broke in to his room and stole all but the 47 francs - or €77 - he had in his pockets.
Down and out, indeed.