Just got an answer from Dagmar Siegel, a nice lady and sales assistant at Laing Germany.
Ecocirc DC- pumps:
Electronical commutated direct-current pump with permanent magnet spherical motor; corrosion resistant; radio shielded; incl. connection cable (1000 mm).
Prices are exclusive 21% VAT taxes and shipping, valid till 31 of December 2004.
Inclusive packaging and manual.
Ecocirc D4-34/810N (article 60 00 042): 12V, Noryl body, 1/2" hosebarb connections:
187 Euro (about 235US$)
MW C (article 95 00 041): Mounting bracket for pump:
3.80 Euro (about 4.78US$)
F 72 (article 95 00 732): Spare rotor inclusive O-ring for D1, D2, D3, D4:
52 Euro (about 65.50US$)
Shipping fee up to 3kg, to Belgium: 9.30 Euro (about 11.71US$)
CD
PS: In the Excel pricelist sheet I got, the 12V Ecocirc pumps are rated for 4 to 24V (min/max voltage). The 24V models are rated for 12 to 30V.
Edit: Prices are for 1 piece, quantity prices on request.