@ Errol : is there that much difference in price between 1-sided or 2-sided PCB ?
To me, you would have more benefits with a 2-sided board than the inconvenient of price. Where do you go for your PCBs ?
Edit: @ William : LPC1343 LPCXpresso - Embedded Artists 
I had a similar question. Never did a pcb before. BatchPcb is like $10 + $2.50/sq in. Do you do a cooper pour on both sides? Any use them before?
Iāve used them for many boards, now. Good quality, low prices, 2 or 4 layers with unlimited vias, and so onā¦
For small quantities, they are perfect. See the last PCB Iāve ordered by them : http://www.lsp-fr.com/astro/wp/archives/144 (the bare PCB is near the middle of the page)
Dimension is 2.12" x 2.71" and unit price is $14.36. +$2 shipping.
I had a doubt for the HTSSOP48, but itās perfect.
The only drawback is the delay. For me, in France, thatās about 3-4 weeks between ordering and delivery. It will be less for US customers, of course.
Edit: and very often, not to say always, you get more PCBs than ordered For my last order, I ordered 3 boards and received 6 !
@ Bec a Fuel: The price about doubles for double sided. Iām in South Africa and options are limited. With local companies there is a $80 order initiation fee, plus plus plus. I think the last time I got a quote it would have been around $100 for two boards. And I would be REALLY peeved if I paid that just to find an error on my board. So I prefer to make all my prototypes at home. I can, and do, make double sided, but I canāt do plated vias, I must solder them, thus I canāt place vias under chipsā¦
I looked at batchpcb before, but I canāt wait 4 weeksā¦ :). But I will probably use them for the FPGA project I want to do next.
@ William: Copper pour? I place a polygon on both sides, connected to ground(or, sometimes, one side connected to ground, the other connected to VCC). This fils all the bare board with a ground plain. I think if you do Copper Pour then it will look the same as using a GND polygon, but it wound be grounded. Might be wrong.
I use PCBCart for my pcbās. Iāve had dozens of designs made with thousands of boards made there. Canāt fault their quality or customer assistance. Quotes are quick and easy to get online.
The thread has gone over to PCB supply options, so hereās my 2c worth 
For small quantities you could always give [url]http://www.dorkbotpdx.org/wiki/pcb_order[/url] a try, they do a 2-layer board fairly often (looking like itās almost weekly at the moment!) Youāre sharing a panel with a lot of other folk, so if youāre after something specific finish-wise it probably wonāt be suitable, but if all you want is a few copies of a sample board for home use, why not?!
@ brett. Dorkbot looks cool. Made in USA and purple (my fav). Submitted order. Thanks.