J'ai fait le point.
Ce que je commande sur Topachat :
http://panier.topachat.com/info/basket/caddie_confirmation.cfm?trid=-1&cht=1&adrid=24162507&codeP24162507=71670&adresseFacturation=0&adresseLivraison=1&adresseLivraisonCache=0&modifAdresseFacturation=0&modifAdresseLivraison=0&ajoutAdresseLivraison=1&numAdresseLivraison=&Aut_shipAdrId=&Aut_adrId=&hasaccount=0&cptPRO=&type=livr&static_new_ship_adr=yes&AUT_shipFirstName=&AUT_shipLastName=&AUT_shipAddress1=&AUT_shipAddress2=&AUT_shipCompany=&AUT_shipCodeAcces=&AUT_shipZip=&AUT_shipCity=&AUT_shipCountry=67&AUT_shipPhone=&AUT_shipWorkPhone=&AUT_shipFax=&AUT_shipLabel=Domicile&x=138&y=5
J'ai changé le disque dur car il n'était plus en stock, je pense que 250Go me suffira, sachant que j'ai un disque dur externe ou seront stockés photos, videos...
Ce que je commande sur Amazon :
https://www.amazon.fr/gp/buy/signin/handlers/continue.html?ie=UTF8&oldPurchaseId=&oldCustomerId=0&purchaseInProgress=&preInitiateCustomerId=A2RIU76XGC2EU3&siteDesign=enabled&hasWorkingJavascript=1&openid.assoc_handle=amazon_checkout_fr&aToken=4%7CB6jd6%2BBoXe79qM0bDq3MuCgNq6bx3BZaQTt7CVqp8yRLFRIQqkMvwYFjHAIKDBrxTpKXEVhgXnI5z4W85Pn55%2B4MMGGUGnS3jVTIgaAbO0F6YTAmy000nA7Fa5E7Q7RXzOxgrIGMOffNGmrig6zTu7rp2uYFx1Oxl4enc4zoqi436lTS9QGnk3p3sZGB4s56ZvhHW57avnTybcGystPyJw%3D%3D&openid.claimed_id=https%3A%2F%2Fwww.amazon.fr%2Fap%2Fid%2Famzn1.account.AGD7WSX325ACTDXRBXTBZXZUCIGA&openid.identity=https%3A%2F%2Fwww.amazon.fr%2Fap%2Fid%2Famzn1.account.AGD7WSX325ACTDXRBXTBZXZUCIGA&openid.mode=id_res&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.op_endpoint=https%3A%2F%2Fwww.amazon.fr%2Fap%2Fsignin&openid.response_nonce=2012-03-01T12%3A37%3A56Z-6088548403730199385&openid.return_to=https%3A%2F%2Fwww.amazon.fr%2Fgp%2Fbuy%2Fsignin%2Fhandlers%2Fcontinue.html%3Fie%3DUTF8%26oldPurchaseId%3D%26oldCustomerId%3D0%26purchaseInProgress%3D%26preInitiateCustomerId%3DA2RIU76XGC2EU3%26siteDesign%3Denabled%26hasWorkingJavascript%3D1&openid.signed=assoc_handle%2CaToken%2Cclaimed_id%2Cidentity%2Cmode%2Cns%2Cop_endpoint%2Cresponse_nonce%2Creturn_to%2CsiteState%2Cpape.auth_policies%2Cpape.auth_time%2Cns.pape%2Csigned&siteState=hasWorkingJavascript&openid.ns.pape=http%3A%2F%2Fspecs.openid.net%2Fextensions%2Fpape%2F1.0&openid.pape.auth_policies=http%3A%2F%2Fschemas.openid.net%2Fpape%2Fpolicies%2F2007%2F06%2Fnone&openid.pape.auth_time=2012-03-01T12%3A37%3A56Z&openid.sig=wB%2BP8OdnTR%2FFWztihdiSfzWQS3f1Y5QzVe%2FRHERSKl0%3D&#d=1
Ca fait 371,03+(423,67-42)=752,7€