This is a comprehensive list of hosted subversion subversion (source code repository) service. I did not include the list of hosted subversion service providers who restrict to only open source projects like sourceforge or tigris.

Company Notes
SVNRepository Level 1 @ $3.95 / mo comes with 500 MB space, unlimited developers, 1 repository & trac instance. Level 5 @ 9.95 / mo comes with unlimited everything except 5 GB space and 1 bugzilla instance. All plans comes with hourly backups, secure access and free migration services for subversion & trac and 24/7 "personal" technical support.
cvsdude The free plan comes with 2 MB space, 1 user and 1 repository. The enterprise plan @ 99.99 (demo) comes with 10 GB diskspace, unlimited users & usergroups, bugzilla, trac, unlimited email support, DAV access and 10 mailing lists. All plans has 10 minute backups.
Wush The starter plan @ 20 / quarter comes with 500 MB disk space, 5 GB data transfer limit, one repository and unlimited developers. The dedicated server plan @ 205 / mo comes with 250 GB disk space, 200GB transfer / mo, unlimited repositories, unlimited developers and comes with root access on the server. All plans comes with live backup (on every commit), offsite nightly backup and hosted on RAID-1 disk array.
SourceHosting The basic subversion hosting is priced at 35 / mo for each 5 users + $30 / mo for each block of 100 megabyte usage. Trac & Bugzilla are priced separately. It uses VMWare for virtualization of accounts.
Projxpert The free plan comes with 5 MB disk space and 1 repository. The ultra plan @ 20$ / mo comes with 35 repositories and 1 GB disk space. All plans comes with unlimited team members, issue tracking, secure access, forums and email notifications.
Project Locker ProjectLocker charges approx 20$ per user. It provides secure access, DAV access, unlimited projects, "no pre-set data limit", rss feed, email notifications and 24/7 monitoring & support.
Hosted Projects The basic plan @ 7$ / mo provides 100MB SVN/Trac disk space and 50MB WebDAV disk space. The enterprise plan @ 30 $ / mo provides 3 GB of SVN/Trac disk space and 200MB WebDAV disk space. All plans come with secure access, unlimited email support, offsite backup every 4 hours, unlimited repositories and Trac projects, unlimited developer accounts and email notifications. Downloading backups cost extra.
DevGuard The basic plan @ 7.95 / mo comes with 100 MB disk space and 2 repositories. The enterprise plan @ 59.95 / mo comes with 5 GB disk space and 500 repositories. All plans has unlimited developers, integrated Trac & WebSVN, secure access, 99.5 % uptime guarantee and uses RAID1 mirrored disks.
Assembla The free plan comes with 200 MB disk space. The Max plan @ 99 / mo comes with automatic backup to external S3 system, email & phone support and 20 GB disk space. All plans has unlimited team size, trac, wiki, chat, notifications and time tracking.

Note:
1. The prices are for month-to-month subscription where discounts are available for longer periods.

2. ProjectLocker uses a widget to provide price for your team size. The price for 1 member was 20$ while price for 10 members were 200$. I guessed 20$ / developer is a safe estimate.

Feel free to suggest more in comments or corrections and clarifications, if any.