One note- the site you linked is in the UK. Not sure of your own location, but worth noting that the lamps may be 240 volt as compared to 120. If you are in the UK, well then, no problem. If you are in the US and running 240 volt lamps off of 120 volt
dimmer circuits, then they are going to be pretty dim! Those replica lamps aren't to bright to begin with
If in the US companies like Bulbrite, Feit and Halco in addition to FerroWatt / AAMSCO have wide selections of these types and more of nostalgic lamps. I supply them often for shows, very popular is Bulbrite's smoked lamp
line and FerroWatt's "Ball of Fire."
http://www.aamsco.com/
http://www.halcolighting.com/
http://www.bulbrite.com/
http://www.feit.com/
Many versions are available in home centers or lamp parts companies like
http://www.grandbrass.com/ but there is a lot more on the market growing every year. Today I bought the 1890 smoked Bulbrite version to bulk up my example
stock http://www.bulbrite.com/products_en_5_155_508_0_1-154018.php in otherwise hairpin or squarrel
filament 1910 lamps.
Yes replica lamps are
dimmer than normal A-lamps, but consider first these are 2,000 hour lamps so in long life should be considered that for output. Have been using one version in the "Execuitive Dining Room" for about eight years now and rarely have to change lamps. Second due to the long
filament, it's not going to be as
point source in lumens. Specifications on the lamps I have not really checked because when someone wants the long
filament or
filament design, this is often more important than actual output for lighting. But wattage up to 60W is currently available that I'm seeing. Love the G-40 and G-30 versions as with the tube lamps.
Caution about FerroWatt/AAMSCO, they list dual
voltage but are 240v lamps. As mentioned you will have some serious amber
shift, but otherwise great styles of lamp available and the Ball of Fire works just fine at 120V.