Wow, their products are not cheap
SL-55 ShieldLink 55 Includes built-in firewall and VPN Gateway, Supports Remote Services for SL200 IP Concentrator Channel Bonding, 10Mbps capacity, 3 WAN Link Load Balancing $1,995.00
SL-100 ShieldLink 100 Includes built-in firewall and VPN Gateway, Bi Directional 2-15 WAN Link Failover and Load Balancing, 150 Mbps Aggregation, QoS, VPN Failover, 128 Domains $3,495.00
SL-200 ShieldLink 200 Includes built-in firewall and VPN Gateway, IP Concentrator; Channel Bonding up to 4 WAN Links into 1 Virtual Pipe/ 40 Mbps; Stateful Failover; All other SL100 Features $4,495.00
SL-250 ShieldLink 250 Includes built-in firewall and VPN Gateway, Bi Directional 2-15 WAN Link Failover and Load Balancing, 500 Mbps Aggregation, QoS, VPN Failover, 512 Domain, Includes Rackmount $5,495.00
SL-250EHQ ShieldLink 250EHQ with Channel Bonding and Global Mgmt Includes built-in firewall and VPN Gateway, IP Concentrator; Channel Bonding up to 6 WAN Links into 1 Virtual Pipe/100 Mbps; Stateful Failover; All other SL250 features with Global Management Feature Set $6,495.00
UPGRADES
SL-UP-200 Upgrades to SL200 Upgrades SL100 to SL200 $1,095.00
SL-UP-250-CB Upgrades SL250 Upgrades SL250 to a SL250 w/Channel Bonding and Global Management $1,095.00